FR2729247B1 - - Google Patents

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Publication number
FR2729247B1
FR2729247B1 FR9500135A FR9500135A FR2729247B1 FR 2729247 B1 FR2729247 B1 FR 2729247B1 FR 9500135 A FR9500135 A FR 9500135A FR 9500135 A FR9500135 A FR 9500135A FR 2729247 B1 FR2729247 B1 FR 2729247B1
Authority
FR
France
Prior art keywords
frame
pct
short
filter
synthesis filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
FR9500135A
Other languages
French (fr)
Other versions
FR2729247A1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Microsoft Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FR9500135A priority Critical patent/FR2729247A1/en
Application filed filed Critical
Priority to CN96191793A priority patent/CN1173938A/en
Priority to CA002209623A priority patent/CA2209623A1/en
Priority to EP96901010A priority patent/EP0801790B1/en
Priority to DE69602421T priority patent/DE69602421T2/en
Priority to PCT/FR1996/000006 priority patent/WO1996021220A1/en
Priority to AU44903/96A priority patent/AU697892B2/en
Priority to BR9606887A priority patent/BR9606887A/en
Priority to AT96901010T priority patent/ATE180092T1/en
Priority to US08/860,746 priority patent/US5963898A/en
Publication of FR2729247A1 publication Critical patent/FR2729247A1/en
Application granted granted Critical
Publication of FR2729247B1 publication Critical patent/FR2729247B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L2019/0001—Codebooks
    • G10L2019/0003—Backward prediction of gain
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L2019/0001—Codebooks
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L2019/0001—Codebooks
    • G10L2019/0012—Smoothing of parameters of the decoder interpolation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/24—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being the cepstrum
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals

Abstract

PCT No. PCT/FR96/00006 Sec. 371 Date Oct. 22, 1997 Sec. 102(e) Date Oct. 22, 1997 PCT Filed Jan. 3, 1996 PCT Pub. No. WO96/21220 PCT Pub. Date Jul. 11, 1996A linear prediction analysis is performed for each frame of a speech signal to determine the coefficients of a short-term synthesis filter and an open-loop analysis is performed to determine a degree of frame voicing. At least one closed-loop analysis is performed for each sub-frame to determine an excitation sequence which, when applied to the short-term synthesis filter, generates a synthetic signal representative of the speech signal. Each closed-loop analysis uses the impulse response of a filter consisting of the short-term synthesis filter and a perceptual weighting filter, by truncating the impulse response to a truncation length that is no greater than the number of samples per sub-frame and is dependent on the energy distribution of the response and the degree of voicing of the frame.
FR9500135A 1995-01-06 1995-01-06 SYNTHETIC ANALYSIS-SPEECH CODING METHOD Granted FR2729247A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FR9500135A FR2729247A1 (en) 1995-01-06 1995-01-06 SYNTHETIC ANALYSIS-SPEECH CODING METHOD
CA002209623A CA2209623A1 (en) 1995-01-06 1996-01-03 Speech coding method using synthesis analysis
EP96901010A EP0801790B1 (en) 1995-01-06 1996-01-03 Speech coding method using synthesis analysis
DE69602421T DE69602421T2 (en) 1995-01-06 1996-01-03 METHOD FOR VOICE CODING BY ANALYSIS BY SYNTHESIS
CN96191793A CN1173938A (en) 1995-01-06 1996-01-03 Speech coding method using synthesis analysis
PCT/FR1996/000006 WO1996021220A1 (en) 1995-01-06 1996-01-03 Speech coding method using synthesis analysis
AU44903/96A AU697892B2 (en) 1995-01-06 1996-01-03 Analysis-by-synthesis speech coding method
BR9606887A BR9606887A (en) 1995-01-06 1996-01-03 Word encoding process with synthesis analysis
AT96901010T ATE180092T1 (en) 1995-01-06 1996-01-03 METHOD FOR SPEECH CODING USING ANALYSIS THROUGH SYNTHESIS
US08/860,746 US5963898A (en) 1995-01-06 1996-01-03 Analysis-by-synthesis speech coding method with truncation of the impulse response of a perceptual weighting filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9500135A FR2729247A1 (en) 1995-01-06 1995-01-06 SYNTHETIC ANALYSIS-SPEECH CODING METHOD

Publications (2)

Publication Number Publication Date
FR2729247A1 FR2729247A1 (en) 1996-07-12
FR2729247B1 true FR2729247B1 (en) 1997-03-07

Family

ID=9474932

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9500135A Granted FR2729247A1 (en) 1995-01-06 1995-01-06 SYNTHETIC ANALYSIS-SPEECH CODING METHOD

Country Status (10)

Country Link
US (1) US5963898A (en)
EP (1) EP0801790B1 (en)
CN (1) CN1173938A (en)
AT (1) ATE180092T1 (en)
AU (1) AU697892B2 (en)
BR (1) BR9606887A (en)
CA (1) CA2209623A1 (en)
DE (1) DE69602421T2 (en)
FR (1) FR2729247A1 (en)
WO (1) WO1996021220A1 (en)

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JP3372908B2 (en) * 1999-09-17 2003-02-04 エヌイーシーマイクロシステム株式会社 Multipulse search processing method and speech coding apparatus
GB2357683A (en) 1999-12-24 2001-06-27 Nokia Mobile Phones Ltd Voiced/unvoiced determination for speech coding
US6760698B2 (en) * 2000-09-15 2004-07-06 Mindspeed Technologies Inc. System for coding speech information using an adaptive codebook with enhanced variable resolution scheme
US7171355B1 (en) 2000-10-25 2007-01-30 Broadcom Corporation Method and apparatus for one-stage and two-stage noise feedback coding of speech and audio signals
FR2820227B1 (en) * 2001-01-30 2003-04-18 France Telecom NOISE REDUCTION METHOD AND DEVICE
FI114770B (en) * 2001-05-21 2004-12-15 Nokia Corp Controlling cellular voice data in a cellular system
US7110942B2 (en) * 2001-08-14 2006-09-19 Broadcom Corporation Efficient excitation quantization in a noise feedback coding system using correlation techniques
US6751587B2 (en) 2002-01-04 2004-06-15 Broadcom Corporation Efficient excitation quantization in noise feedback coding with general noise shaping
US7206740B2 (en) * 2002-01-04 2007-04-17 Broadcom Corporation Efficient excitation quantization in noise feedback coding with general noise shaping
US20030135374A1 (en) * 2002-01-16 2003-07-17 Hardwick John C. Speech synthesizer
US20040098255A1 (en) * 2002-11-14 2004-05-20 France Telecom Generalized analysis-by-synthesis speech coding method, and coder implementing such method
US8473286B2 (en) * 2004-02-26 2013-06-25 Broadcom Corporation Noise feedback coding system and method for providing generalized noise shaping within a simple filter structure
FR2888699A1 (en) * 2005-07-13 2007-01-19 France Telecom HIERACHIC ENCODING / DECODING DEVICE
US8300849B2 (en) * 2007-11-06 2012-10-30 Microsoft Corporation Perceptually weighted digital audio level compression
US9626982B2 (en) * 2011-02-15 2017-04-18 Voiceage Corporation Device and method for quantizing the gains of the adaptive and fixed contributions of the excitation in a CELP codec
MY194208A (en) 2012-10-05 2022-11-21 Fraunhofer Ges Forschung An apparatus for encoding a speech signal employing acelp in the autocorrelation domain
US9336789B2 (en) * 2013-02-21 2016-05-10 Qualcomm Incorporated Systems and methods for determining an interpolation factor set for synthesizing a speech signal
CN105096958B (en) 2014-04-29 2017-04-12 华为技术有限公司 audio coding method and related device
EP3483879A1 (en) 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Analysis/synthesis windowing function for modulated lapped transformation
EP3483884A1 (en) * 2017-11-10 2019-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Signal filtering

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Also Published As

Publication number Publication date
ATE180092T1 (en) 1999-05-15
AU697892B2 (en) 1998-10-22
FR2729247A1 (en) 1996-07-12
AU4490396A (en) 1996-07-24
EP0801790A1 (en) 1997-10-22
WO1996021220A1 (en) 1996-07-11
US5963898A (en) 1999-10-05
CA2209623A1 (en) 1996-07-11
EP0801790B1 (en) 1999-05-12
CN1173938A (en) 1998-02-18
DE69602421D1 (en) 1999-06-17
BR9606887A (en) 1997-10-28
DE69602421T2 (en) 1999-12-23

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CJ Change in legal form
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Owner name: MICROSOFT CORPORATION, US

Effective date: 20130408